Recurrent pregnancy loss is one of the clinical conditions in reproductive medicine where the etiology cannot be attributed to a single cause. Current international guidelines recommend a systematic evaluation based on individual risk factors for cases experiencing two or more pregnancy losses. However, it is acknowledged that not every pregnancy loss develops through the same mechanism, and therefore, applying the same diagnostic algorithm for every patient is not appropriate.
For this reason, the goal when evaluating recurrent pregnancy loss is to identify clinically significant etiological factors and to establish an individualized evaluation process based on the findings obtained.
What Steps Does Clinical Evaluation Consist Of?
Evaluation in recurrent pregnancy loss does not consist solely of laboratory tests. Maternal age, the gestational week at which the loss occurred, obstetric history, the course of previous pregnancies, chronic diseases, and family history are all considered together. These data play a fundamental role in determining which diagnostic methods may be clinically significant.
For example, since first-trimester losses and second-trimester losses may be associated with different pathophysiological mechanisms, the evaluation plan is shaped by taking these differences into account.
Which Etiological Factors Can Be Investigated?
Genetic Factors
A significant portion of first-trimester pregnancy losses is associated with chromosomal anomalies of the embryo. In cases where the clinical history is appropriate, parental karyotype analysis may be planned. In cases where adequate sampling can be provided, genetic examination of the pregnancy material may also be among the methods that can contribute to the etiological evaluation.
Structural Findings of the Uterine Cavity
Congenital uterine anomalies, submucosal fibroids, endometrial polyps, or intrauterine adhesions are among the structural findings that can be evaluated regarding the implantation process and early pregnancy development. If clinically necessary, methods such as transvaginal ultrasonography, saline infusion sonography, or hysteroscopy can be utilized. The imaging method to be used is determined according to the patient's clinical characteristics.
Endocrine and Metabolic Conditions
Endocrine diseases such as thyroid dysfunction, uncontrolled diabetes, or hyperprolactinemia can be considered among the clinical conditions that may affect the pregnancy process. Therefore, hormonal and metabolic examinations are planned based on clinical history and examination findings rather than a standard screening approach.
Immunological and Hematological Evaluation
One of the immunological conditions with the most strongly defined association with recurrent pregnancy loss is antiphospholipid syndrome. In contrast, hereditary thrombophilia tests are not recommended as part of routine evaluation for all patients in current international guidelines. The necessity of testing is determined by evaluating personal history of thromboembolism, family history, and other clinical findings together.
Why is a Personalized Approach Adopted?
Recurrent pregnancy loss is a heterogeneous clinical picture in which different biological mechanisms may play a role. Therefore, instead of interpreting each finding obtained in the diagnostic process in isolation, it is essential to evaluate the clinical history, laboratory results, and imaging findings together. It should also be kept in mind that in some cases, a clear etiological cause may not be identified despite comprehensive examinations.
The current approach is based on evaluating risk factors that may be clinically significant using evidence-based methods while preventing unnecessary tests.
Frequently Asked Questions (FAQ)
After how many miscarriages is recurrent pregnancy loss evaluated?
Current international guidelines state that an evaluation can be planned based on individual risk factors in cases experiencing two or more pregnancy losses.
Are the same examinations performed on every patient?
No. The diagnostic approach is planned specifically for the individual, taking into account pregnancy history, age, clinical findings, and accompanying diseases.
Are hereditary thrombophilia tests requested routinely?
No. Current guidelines do not recommend the routine application of these tests in all patients. The necessity of the test is determined as a result of clinical evaluation.
Is a specific cause always identified in recurrent pregnancy loss?
No. Despite comprehensive evaluations, a clear underlying etiological cause may not be demonstrated in some cases.
For detailed information about diagnostic processes and clinical evaluation regarding recurrent pregnancy loss, you can consult with the obstetrics and gynecology specialists at HRS Ankara Women's Hospital.
Disclaimer: The content on this page is for informational purposes only. Please consult your physician for diagnosis and treatment.
